Last year Edward Snowden downloaded tens of thousands of top-secret documents from a highly secure government computer network. The revelations that followed touched off a fierce debate over the massive surveillance operations conducted by the National Security Agency. This documentary investigates the secret history of the unprecedented surveillance program that began in the wake of September 11th and continues today.

Last year Edward Snowden downloaded tens of thousands of top-secret documents from a highly secure government computer network. The revelations that followed touched off a fierce debate over the massive surveillance operations conducted by the National Security Agency. This documentary investigates the secret history of the unprecedented surveillance program that began in the wake of September 11th and continues today.